Investigation on coordination number and geometrical conformation of rare earth complexes with catenulate aminopolycarboxylic acid ligands

Edta-linked 5p–4f trinuclear heterometallic complex: syntheses, X-ray structure and luminescent properties

“…Generally, lanthanide(III) metal complexes with aminopolycarboxylic acids adopt eight-, nine-, or 10-coordinate structures. Their structures and coordination numbers largely depend on ionic radius, electron configuration, nature of counter cation(s), as well as the shape of ligands [24]. Sm(III), with relatively large ionic radius and 4f 5 electron configuration, commonly forms nine-coordinate structures with most aminopolycarboxylic acids [25].…”

A comparison of multilayered coordination numbers in FCC and HCP crystals

“…The molecular coordination numbers in the crystal structures of organic compounds were discussed in [9]. In [10], coordination number and geometrical conformation in rare earth metal were considered. In [11], computing problems of atom numbers of different coordination shells in cubic crystals were studied.…”